enable Edit mode, put Cursor in left or right panel.
- go to last line (must contain at least one character, but less than fit into window width)
- press Ctrl-right two times
=> Cursor is set after the last line
=> Ctrl-right/left and Alt-right/left don't work anymore
- go to last line (must contain more characters than fit into window width, so scrolling right is neccessary to see the line end)
- press Ctrl-right two times
=> the Cursor is hidden
- press Ctrl-right one more time
=> Cursor is set after the last line
=> Ctrl-right/left and Alt-right/left don't work anymore